A 4-year-old coolly informing his mother she was "not his friend". After I had purchased my groceries I observed him swinging, giddy with joy, around a pole while waiting for this same mother to finish her purchases. Today, a sales clerk adding up groceries while incorporating a bit of song and a dance move.
Still hoping to get more people to participate in the Valentine's Day prompt - just leave Valentine's Day wishes for a stranger, as a collage, card, or poem in a place where someone will find it, take a photo of your placement, and I'll link to you February 14. Let me know here or in the comments for the original post if you have done so.